Beauty in things exists in the mind which contemplates them.

你自己的心灵是一个神圣的围墙，除非得到你的许可，否则没有任何有害的东西能够进入。

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

多项式时间归约的概念对于理解NP完全问题的结构至关重要。

摆脱诱惑的唯一方法就是屈服于它。